EN-52
ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L305 CT1 Front Panel.SchDoc
AMP022 Front Panel
Contact Engineer:
L305CT
06/01/2020
INITIALS
Printed:
1 1Sheet of
Notes:
Contact Tel: 01223 203207Peter Kuell
A & R Cambridge Ltd.
Cambridge CB25 9QE
Waterbeach
A3
ARCAM
HP OUT L FP
HP OUT R FP
AUX R FP
AUX L FP
+3V3 STBY FP
FRONT PANEL CONNECTION
AGND HP FP
ENC A FP
ENC B FP
IR IN FP
HP PRES FP
AGND FP
MENU IP+ BALANCEIP- DIRECTDIRAC DISPLAYMUTE INFO
C
C
B
B
A
A
4
SW909
EC16B242040A
DGND FP
DGND FP
0W063
R914
10K
0W063
R915
10K
ENC A FP
ENC B FP
ENCODER
KEYBOARD
+3V3 STBY FP
1
2
SW900
1
2
SW901
1
2
SW902
1
2
SW903
1
2
SW904
1
2
SW905
1
2
SW906
SCAN1 FP
SCAN2 FP
SCAN3 FP
1
2
SW907
1
2
SW908
0W063
R908
1K0
0W063
R904
1K0
0W063
R905
1K5
0W063
R906
2K0
0W063
R900
1K0
0W063
R901
1K5
0W063
R902
2K0
50V
C901
100N
50V
C902
100N
50V
C900
100N
DGND FP
DGND FP
DGND FP
DGND FP
IR IN FP
IR INPUT
VCC
O/P
GND
RX900
KSM-2002TM5B
50V
C910
100N
2 4
1
IC900A
74LVC1G125
DGND FP
GND
3
VCC
5
IC900B
74LVC1G125
50V
C915
100N
+3V3 STBY FP
DGND FP
0W125
R922
100R
50V
NPO
C904
100P
AGND FP
AUX R FP
AUX L FP
AGND FP
HP OUT L FP
HP OUT R FP
HEADPHONE OUTPUT
AUX INPUT
50V
NPO
C903
100P
0W063
R918
10K
50V
NPO
C906
100P
50V
NPO
C907
100P
HP PRES FP
AGND HP FP
AGND HP FP
2b
3c
1a
5e
4d
L
R
3562
SK901
Jye Tai
2b
3c
1a
5e
4dL
R
3562
SK900
Jye Tai
AGND FP AGND FP
AUX PRES*
0W063
R917
4K7
0W063
R920
4K7
DGND FP
DGND FP
SCAN1 FP
SCAN2 FP
SCAN3 FP
DGND FP
DGND FP
AGND HP FP
1
FIX900
Dia 3.2mm
1
FIX901
Dia 3.2mm
1
FIX902
Dia 3.2mm
1
FIX904
Dia 3.2mm
1
FIX905
Dia 3.2mm
AGND FP
DGND FP
+3V3 STBY FP
POWER/STANDBY LED
0W063
R909
1K0
0W063
R910
1K0
DGND FP
RED FP GREEN FP
TR902
MMUN2211LT1
TR903
MMUN2211LT1
F1
1
F2
2
VDISP
5
LGND
6
DGND
7
VDD
8
OSC
9
RESET
10
CS
11
CP
12
DA
13
DO
14
TEST
15
F2
61
F2
62
CIG33-1612N
DISP900
BOE
DGND FP
0W125
R928
8K2
50V
C940
39P
+5VFP
+5V STBY FP
+5VFP
VFD DATA FP
VFD CLK FP
VFD CS FP
VFD RES* FP
+5VFP
+5V STBY FP
+38V
DGND FP
F2
F1
V DISP
V DISP
63V
C946
22UF
DGND FP
0W125
R935
100K
50V
C944
100N
0W25
R934
1K8
0W125
R936
100K
63V
C945
22UF
50V
C947
10UF
50V
C948
100N
63V
C943
22UF
50V
C949
100N
0W125
R932
100K
FROM TX
1
2
3
4
5
6
XH (HORIZONTAL)
CON901
JST
D900
S1D
0W25
R931
10R
0W25
R933
10R
2 3
1
IC901A
74HCT125D
VFD DATA FP VFD DATA FP 5V
5 6
4
IC901B
74HCT125D
VFD CLK FP VFD CLK FP 5V
9 8
10
IC901C
74HCT125D
VFD CS FP 5VVFD CS FP
12 11
13
IC901D
74HCT125D
VFD RES* FP 5VVFD RES* FP
VFD DATA FP 5V
VFD CLK FP 5V
VFD CS FP 5V
VFD RES* FP 5V
DGND FP
0W063
R923
10K
0W063
R924
10K
0W063
R925
10K
0W063
R930
10K
DGND FP
+5VFP
+5VFP
+5VFP
50V
C935
100N
DGND FP
50V
C937
100N
DGND FP
F2 F1
DGND FP
0W25
R929
10K
+38V
+38V
+38V
50V
C925
100N
GND
7
VCC
14
IC901E
74HCT125D
DGND FP
50V
C942
100N
DGND FP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
52793
CON900
MOLEX
AGND HP FP
DGND FP
0W063
R903
2K7
0W063
R907
2K7
500mA
L923
600R@100MHz
500mA
L924
600R@100MHz
500mA
L925
600R@100MHz
50V
C905
100N
50V
C908
100N
50V
C939
100N
DGND FP
6.3V
C909
10UF
TR905
BD139
50V
NPO
C911
100P
+3V3 STBY FP
+5VFP
+5V STBY FP
C913
C916
IR IN FP
C918
C921
C923
ENC A FP
ENC B FP
SCAN1 FP
C926
C928
C931 C932
C929
SCAN2 FP
SCAN3 FP
C927
VFD DATA FP
C914
C917
HP PRES FP
VFD CLK FP
VFD CS FP
VFD RES* FP
C919
HP OUT L FP
HP OUT R FP
C922
C924
DGND FP
50V
NPO
C912
100P
50V
NPO
C920
100P
50V
NPO
C930
100P
50V
NPO
C936
100P
50V
NPO
C941
100P
DGND FP
DGND FP
DGND FP
DGND FP
L919
L920
L921
L922
3.3V to 5V conversion
F CT
39V
DZ901
BZG03C
WHITE FP
TR904
MMUN2211LT1
0W063
R911
1K0
RED FP
GREEN FP
WHITE FP
C933
RED FP
GREEN FP
C934
C938
AUX R FP
AUX L FP
TR900
BC847BW
TR901
BC847BW
+5V STBY FP
+5V STBY FP
GRNRED BLU
Hyp Red/Green/Blue
LED900
SM
R919
R921
500mA
L900
600R@100MHz
L901
L902
L903
L904
L905
L906
L907
L908
L909
L910
L911
L912
L913
L914
L915
L916
L917
L918
7V5
DZ900
BZX84C
1
FIX903
Dia 3.2mm
0W25
R913
220R
0W25
R916
220R
COOL WHITE
LED901
0603
0W063
R912
1K0
NF
VFD
WHITE FP
18_E051 PK 09/11/18 None to this sheet B.0
L305PB Blank PCB L305PB AMP022 Front PCBPCB1 1
TOOL1 TOOL2 TOOL3
TOOL4
FD1 FD2
19_E016 PK 12/06/19 DV release C.0
P955
P954
P956
P959
P958
P949
P950
P951
P916
P917
P918
P922
P923
P924
P926
P928
P930
P931
P932
P933
P934
P935
P938
P939
P941
P942
P943
P936
P912 P913 P914 P915
P919 P920
P921
P925
P927
P929
P937
P940
P908P907P906P905P904P903P902P901P900
P944
P945
P946
P947
P948
P952
P953
P909
P910
P911
P961
P960
P957
P962
P963
P964
P965
19_E028 PK 23/07/19 Add resistors to dim grid 1.0
19_E038 PK 11/11/19 PCB change to encoder footprint only 2.0
20_E001 PK 06/01/20 Change grid resistors back to 10R 3.0
0W25
R926
10R
0W25
R937
10R
0W25
R927
10R
0W25
R938
10R
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